JP6240401B2 - Sound reproducing device and sound collecting type sound reproducing device - Google Patents

Description

  The present invention relates to a sound reproducing device such as a hearing aid and a sound collecting type sound reproducing device.

  2. Description of the Related Art A conventional sound reproduction device such as an open fitting type hearing aid is provided with a vent that conducts between the inside of the external auditory canal and the outside world in order to reduce the feeling of bulkiness when worn (for example, Patent Document 1). A schematic diagram of a conventional hearing aid 90 is shown in FIG. A conventional hearing aid 90 includes a microphone unit 91, an earphone 92, and a vent 93. The microphone unit 91 collects sound from the sound source, and the earphone 92 lets the user hear the sound collected by the microphone unit 91. As described above, the vent 93 is a hole that conducts the inside of the external auditory canal and the outside. Since the external auditory canal is not sealed by the vent 93, the feeling of being obscured when the hearing aid 90 is worn is reduced.

JP 2006-304147 A

  In the conventional open fitting type hearing aid 90, sound emitted from the earphone 92 arrives at the eardrum through the ear canal (path i in FIG. 10). In addition, bass sounds mainly from the sound emitted from the earphone 92 escape from the vent 93 to the outside world (path ii). In addition to the sound of the earphone 92, sound from the sound source arrives directly at the eardrum through the vent 93 (path iii). In FIG. 11, the schematic diagram of the acoustic characteristic which concerns on the conventional hearing aid 90 is shown. FIG. 11A shows the acoustic characteristics of the sound near the earphone 92 emitted from the earphone 92. FIG. 11B shows the acoustic characteristics of the sound that has arrived at the eardrum via the path i. In the acoustic characteristics shown in FIG. 11B, the sound pressure of the bass is lower than the acoustic characteristics in the vicinity of the earphone 92. FIG. 11C shows the acoustic characteristics of the sound arriving at the eardrum through the path iii. FIG. 11 (d) shows the synthesis of the sound of path i and path iii, that is, the actual acoustic characteristics heard by the user wearing the hearing aid. In the acoustic characteristics shown in FIG. 11D, the sound pressure of the bass is lowered by the amount of the bass that escapes from the vent 93, and the sense of volume is impaired. On the other hand, if the diameter of the vent 93 is reduced in order to prevent the bass from escaping, a feeling of stagnation is caused and the comfort at the time of wearing is impaired.

  Accordingly, an object of the present invention made in view of the above problems is to provide a sound reproducing device and a sound collecting type sound reproducing device capable of suppressing the loss of sound volume and comfort.

In order to solve the above problems, the sound reproducing device according to the present invention is:
A piezoelectric element that bends, and a vibration section that includes a panel that is bent and vibrated directly by the piezoelectric element;
A holding unit that holds the vibrating unit at a position where the vibrating unit contacts the user's ear,
A sound reproducing device for listening to sound to the user ,
The holding portion has a predetermined weight at an end facing the vibration portion, and the weight causes a force in a direction in which the vibration portion comes into contact with a user's ear .

Moreover, the sound reproducing device according to the present invention is
The vibration unit abuts on the user's tragus from the inside of the user's ear and transmits the vibration to the tragus, thereby allowing the user to hear the sound.

Moreover, the sound reproducing device according to the present invention is
The vibration unit abuts on the user's antitragus from the inside of the user's ear, and transmits the vibration to the antitragus so that the user can hear the sound.

Moreover, the sound reproducing device according to the present invention is
A pressing member that presses the vibration part at a position where the vibration part comes into contact with the user's ear is provided.

Moreover, the sound reproducing device according to the present invention is
The pressing member is detachably held with respect to the vibrating portion.

Moreover, the sound reproducing device according to the present invention is
The user's ear canal is not sealed by the sound reproducing device.

Moreover, the sound reproducing device according to the present invention is
The panel vibrates with the center of the panel as an abdomen and both sides of the abdomen as nodes,
The center vicinity of the panel is in contact with the tragus.

Moreover, the sound reproducing device according to the present invention is
The panel has the center of the panel as an abdomen and both sides of the abdomen as nodes,
The vicinity of the center of the panel is in contact with the tragus.

Moreover, the sound reproducing device according to the present invention is
The vibration unit may be in contact with the user's tragus from the outside of the user's ear and transmit the vibration to the tragus so that the user can hear the sound.

Moreover, the sound reproducing device according to the present invention is
The vibration unit abuts on the user's antitragus from the outside of the user's ear, and transmits the vibration to the antitragus so that the user can hear the sound.

Moreover, the sound collecting type sound reproducing device according to the present invention is:
In addition, with a microphone part,
The user's ear is located between the microphone unit and the vibration unit.

Moreover, the sound collecting type sound reproducing device according to the present invention is:
An external ear canal radiated sound is generated inside the user's ear by the vibration unit.

Moreover, the sound collecting type sound reproducing device according to the present invention is:
The vibrating portion is pressed against the user's ear with a force of 0.1N to 3N.

Moreover, the sound collecting type sound reproducing device according to the present invention is:
The piezoelectric element has a plate shape,
The panel has an area that is 0.8 to 10 times the area of the main surface of the piezoelectric element.

Moreover, the sound collecting type sound reproducing device according to the present invention is:
The holding portion has a predetermined weight, and the weight causes a force in a direction in which the vibration portion comes into contact with a user's ear.

  According to the sound reproducing device and the sound collecting type sound reproducing device of the present invention, the two contradictory feelings of volume and comfort are not greatly impaired.

It is a block diagram which shows the hearing aid which concerns on one Embodiment of this invention. It is a schematic diagram which shows the curve of the panel and piezoelectric element of a hearing aid which concern on one Embodiment of this invention. It is a figure which shows the state of the hearing aid 1 at the time of removing a pressing member. It is a side view of the thickness direction of a vibration part. It is a figure which shows the state which mounted | wore the user's ear with the hearing aid which concerns on one Embodiment of this invention. It is the schematic which shows transmission of the sound from the hearing aid concerning one Embodiment of this invention. It is a figure which shows the outline | summary of the acoustic characteristic of each path | route. It is a figure which shows the measured value of the acoustic characteristic which concerns on the hearing aid which concerns on one Embodiment of this invention. It is a related figure of the vibration part and microphone part of a hearing aid concerning one embodiment of the present invention. It is the schematic of the conventional hearing aid. It is a figure which shows the outline | summary of the acoustic characteristic which concerns on the conventional hearing aid.

  Embodiments of the present invention will be described below.

(Embodiment)

  FIG. 1 is a block diagram of a sound reproducing device 1 according to an embodiment of the present invention. The sound reproduction device 1 is, for example, a hearing aid 1 and includes a vibration unit 10, a microphone unit 20, a control unit 30, a volume / sound quality adjustment interface unit 40, and a storage unit 50.

  The vibration unit 10 includes a piezoelectric element 101 that bends and a panel 102 that is directly bent by the piezoelectric element 101 and vibrates. FIG. 2 schematically shows how the panel 102 is bent by the piezoelectric element 101. The vibration unit 10 allows the user to hear air conduction sound and human body vibration sound due to vibration. The air conduction sound is a sound transmitted to the auditory nerve of the user by the vibration of the air caused by the vibration of the object being transmitted to the eardrum through the ear canal. The human body vibration sound is a sound transmitted to the user's auditory nerve through a part of the user's body (for example, the cartilage of the outer ear) that contacts the vibrating object.

  The piezoelectric element 101 is an element that expands and contracts or bends (curves) in accordance with an electromechanical coupling coefficient of a constituent material by applying an electric signal (voltage). For these elements, for example, those made of ceramic or quartz are used. The piezoelectric element 101 may be a unimorph, bimorph, or multilayer piezoelectric element. The stacked piezoelectric element includes a stacked unimorph element in which unimorphs are stacked (for example, 16 layers or 24 layers), or a stacked bimorph element in which bimorphs are stacked (for example, 16 layers or 24 layers are stacked). The laminated piezoelectric element is composed of a laminated structure of a plurality of dielectric layers made of, for example, PZT (lead zirconate titanate) and electrode layers arranged between the plurality of dielectric layers. A unimorph expands and contracts when an electric signal (voltage) is applied, and a bimorph bends when an electric signal (voltage) is applied.

  The panel 102 is formed of synthetic resin such as glass or acrylic. The shape of the panel 102 is preferably a plate shape, and the following description will be made assuming that the shape of the panel 102 is a plate shape.

  The microphone unit 20 collects sound from a sound source, specifically, sound that has arrived at the user's ear.

  The control unit 30 performs various controls related to the hearing aid 1. The control unit 30 applies a predetermined electrical signal (voltage corresponding to the sound signal) to the piezoelectric element 101. Specifically, in the control unit 30, the analog / digital conversion unit 31 converts the sound signal collected by the microphone unit 20 into a digital signal. Then, the signal processing unit 32 outputs a digital signal for driving the vibration unit 10 based on information related to the volume and sound quality by the volume / sound quality adjustment interface unit 40 and information stored in the storage unit 50. The digital-analog conversion unit 33 converts the digital signal into an analog electric signal, amplifies it by the piezoelectric amplifier 34, and applies the electric signal to the piezoelectric element 101. The voltage applied to the piezoelectric element 101 by the control unit 30 is, for example, ± 15 V, which is higher than ± 5 V, which is an applied voltage of a so-called panel speaker for the purpose of conducting sound by air conduction sound instead of human body vibration sound. It may be. Thereby, sufficient vibration can be generated in the panel 102 and a human body vibration sound can be generated through a part of the user's body. Note that how much applied voltage is used can be appropriately adjusted according to the fixing strength of the panel 102 or the performance of the piezoelectric element 101. When the control unit 30 applies an electrical signal to the piezoelectric element 101, the piezoelectric element 101 expands or contracts or bends in the longitudinal direction.

  At this time, the panel 102 to which the piezoelectric element 101 is attached is deformed in accordance with expansion / contraction or bending of the piezoelectric element 101, and the panel 102 vibrates. The panel 102 is bent by expansion / contraction or bending of the piezoelectric element 101. The panel 102 is directly bent by the piezoelectric element 101. Here, “the panel 102 is directly bent by the piezoelectric element 101” means that the inertial force of the piezoelectric actuator configured by arranging the piezoelectric element 101 in the casing as employed in a conventional panel speaker. This is different from the phenomenon in which a specific region of the panel 102 is vibrated and the panel 102 is deformed. “The panel 102 is directly bent by the piezoelectric element 101” means that the expansion or contraction or bending (curving) of the piezoelectric element 101 directly bends the panel 102 via the bonding member.

  Since the panel 102 vibrates as described above, the panel 102 generates an air conduction sound and, when the user contacts the tragus, generates a human body vibration sound via the tragus. Preferably, the panel 102 vibrates with the vicinity of both ends of the panel 102 as a node and the center as an antinode, and the vicinity of the center of the panel 102 abuts against the tragus or the antitragus. By doing in this way, the vibration of the panel 102 can be efficiently transmitted to the tragus or the tragus.

  FIG. 3 is a schematic diagram showing the configuration of the hearing aid 1 according to the embodiment of the present invention. As shown in FIG. 3, the vibration unit 10 includes a pressing member 11 and a pressing member mounting portion 12. The pressing member 11 is attached to the vibration part 10. For example, when the vibration part 10 abuts on the user's tragus, the vibration part 10 is abutted on a part of the external auditory canal facing the tragus, for example, near the tragus. Press to the position where the pearls abut. Here, the position where the vibration unit 10 contacts the user's ear may be, for example, tragus, antitragus, concha, or auricle. Hereinafter, in the present embodiment, an example in which the position in contact with the user's ear is the tragus (the inner wall of the external ear canal on the tragus side) will be described.

  The pressing member attaching portion 12 is a member for attaching the pressing member 11 to the vibrating portion 10. The pressing member 11 and the attachment portion 12 are shaped to fit each other. Preferably, the pressing member 11 has a concave cut portion 111, and the attachment portion 12 has a convex shape that fits into the cut portion 111. The pressing member 11 can be attached to and detached from the vibrating unit 10 by sliding in the width direction. Preferably, the vibration unit 10 has a thickness (D) of 4 mm and a width (W) of 15 mm or less. If it is within this size range, the gender age is not limited (except for infants and younger), and the vibration unit 10 can be housed in the ear canal of the user's ear. Preferably, the pressing member 11 has three types of sizes (small size, medium size, large size), and the pressing member 11, 11b, or 11c is selected and pressed according to the size of the user's ear. It is made to attach to the attachment part 12 of a member.

  The holding unit 60 includes a support unit 61, an ear hooking unit 62, and a main body unit 63, and holds the vibrating unit 10 at a position where the vibrating unit 10 comes into contact with the user's ear (an inner wall of the ear canal side). The end of the support part 61 is connected to the vibration part 10. The support part 61 has a hollow structure, and lead processing to the vibration part 10 is performed through the hollow structure. Further, the support portion 61 has such a rigidity that the angle of the vibration portion 10 does not change. The other end of the support 61 is connected to the end of the ear hook 62.

  The ear hook 62 contacts the outside of the user's pinna and wears the hearing aid 1 on the user's ear. Preferably, the ear hook 62 has a hook shape along the user's pinna so that the hearing aid 1 can be stably attached to the user's ear. The other end of the ear hook 62 is connected to the main body 63. The main body 63 includes a microphone unit 20, a control unit 30, a volume / sound quality adjustment interface unit 40, and a storage unit 50.

  FIG. 4 is a side view of the vibrating unit 10 as viewed from the thickness direction. As described above, the vibration unit 10 includes the piezoelectric element 101 and the panel 102. Preferably, as shown in FIG. 4, the piezoelectric element 101 has a plate shape.

  The piezoelectric element 101 is joined to the panel 102 by a joining member. The bonding member is provided between the main surface of the piezoelectric element 101 and the main surface of the panel 102. The joining member may be a non-heating type curable adhesive or a double-sided tape.

  In addition, the piezoelectric element 101 is covered with a mold 103 except for the joint surface with the panel 102. A pressing member 11 and a pressing member mounting portion 12 are provided on the upper portion of the mold 103.

  Preferably, the main surface of the panel 102 has an area that is 0.8 to 10 times the area of the main surface of the piezoelectric element 101. If the main surface of the panel 102 has an area in the range of 0.8 to 10 times the main surface of the piezoelectric element 101, the panel 102 can be deformed in accordance with the expansion or contraction or bending of the piezoelectric element 101, and the contact area with the user's ears Enough can be secured. The area of the piezoelectric element and the panel is more preferably 0.8 times to 5 times, for example.

  FIG. 5 is a diagram illustrating a state in which the hearing aid 1 according to the embodiment of the present invention is worn on the user's ear. FIG. 5A is a view of the ear seen from the front, and FIG. 5B is a view seen from the side of the face. The hearing aid 1 according to the present invention allows the user to hear sound by bringing the vibration unit 10 into contact with the user's tragus or the antitragus from the inside of the user's ear and transmitting the vibration to the tragus or the antitragus. The Here, “to make the vibration unit 10 abut on the user's tragus or the antitragus from the inside of the user's ear” means that when the vibration unit 10 is embedded in the ear canal of the ear from the vicinity of the entrance to the ear canal. This is to contact the tragus or the tragus. In the example illustrated in FIG. 5, the vibration unit 10 is brought into contact with the user's tragus from the inside of the user's ear. At this time, the pressing member 11 is in contact with a part of the ear canal facing the tragus.

  Further, as shown in FIG. 5A, the vibration unit 10 has the direction of the arrow 601 through the support unit 61 due to the weight of the holding unit 60, that is, the weight of the main body 63 connected to the end of the ear hook 62. Pulled on. As shown in FIG. 5B, the vibrating unit 10 is in contact with the tragus so as to be hooked on the tragus. Therefore, when the vibrating unit 10 is pulled, the direction in which the vibrating unit 10 contacts the user's ear (the direction of the arrow 602). ) Power works. That is, the weight (holding force) in the direction in which the vibration unit 10 abuts the user's ear is generated by the weight of the holding unit 60. As described above, the holding unit 60 generates a pressing force on the vibration unit 10, thereby further reliably transmitting sound due to the vibration of the vibration unit 10.

  Preferably, the vibration unit 10 is pressed against the user's ear with a force of 0.1N to 3N. When the vibration part 10 is pressed in the range of 0.1N to 3N, the vibration by the vibration part 10 is sufficiently transmitted to the ear. If the pressing force is a small force of less than 3N, even if the hearing aid 1 is worn for a long time, the user feels less tired and can maintain comfort during wearing.

  Further, as shown in FIG. 5A, in the hearing aid 1 of the present invention, the ear canal is not sealed by the vibrating portion 10 and the pressing member 11. For this reason, the hearing aid 1 of the present invention does not cause a feeling of being bulky and can maintain comfort when worn.

  Next, acoustic characteristics of the hearing aid 1 according to the embodiment of the present invention will be described with reference to FIGS.

  FIG. 6 is a schematic view showing transmission of sound from the hearing aid 1 according to the embodiment of the present invention. In FIG. 6, only the vibration unit 10 and the microphone unit 20 are illustrated for the hearing aid 1. The microphone unit 20 collects sound from the sound source, and the vibration unit 10 lets the user hear the sound collected by the microphone unit 20 by vibration.

  As shown in FIG. 6, the sound from the sound source arrives directly at the eardrum through the ear canal from a portion not covered by the vibration unit 10 (path I). In addition, the air conduction sound due to the vibration of the vibration unit 10 arrives at the eardrum through the ear canal (path II). Further, at least the inner wall of the ear canal vibrates due to the vibration of the vibration unit 10, and a sound (radiation sound of the ear canal) due to the vibration of the ear canal arrives at the eardrum (path III). Further, the vibration of the vibration unit 10 causes the human body vibration sound to arrive directly at the auditory nerve without passing through the eardrum (trans-IV). A part of the air conduction sound generated from the vibration unit 10 escapes to the outside (path V).

  FIG. 7 shows a schematic diagram of the acoustic characteristics of each path. FIG. 7A shows the acoustic characteristics of the sound along the path I, and FIG. 7B shows the acoustic characteristics of the sound along the paths II and III. As for the sound of the paths II and III, the bass sound escapes by the path V, so that the sound pressure in the bass area is low. FIG. 7C shows the acoustic characteristics of the IV. As shown in FIG. 7C, the human body vibration sound is a low-pitched sound, that is, a vibration in a low-frequency region, and thus is not easily attenuated, and is thus more easily transmitted than a high sound. Accordingly, the bass sound is sufficiently transmitted. FIG. 7D shows the synthesis of the sound of the path I or IV, that is, the actual acoustic characteristics heard by the user wearing the hearing aid 1. As shown in FIG. 7D, although the low sound pressure escapes to the outside in the path V, the low sound pressure is ensured by the human body vibration sound, in particular, the low sound pressure of 1 kHz or less in this embodiment. This makes it possible to maintain a sense of volume.

  FIG. 8 shows measured values of frequency characteristics of the hearing aid 1 of the present invention. “Air” is the frequency characteristic of the sound of path II and path III in FIG. 6, and “vib” is the frequency characteristic of the sound of path IV in FIG. “Air + vib” is a frequency characteristic of the sound obtained by synthesizing the sound of the route II to the route IV. The “sound from the outside” is the frequency characteristic of the sound of path I in FIG. As these actually measured values indicate, since the sound pressure of the bass is transmitted by the human body vibration sound, it is possible to suppress the loss of volume feeling.

  FIG. 9 is a diagram illustrating a relationship between the vibration unit 10 and the microphone unit 20 of the hearing aid 1 according to the embodiment of the present invention. Since the microphone part 20 is provided in the main body part 63 of the holding part 60, it is located outside the auricle. FIG. 9A shows an example in which the vibration unit 10 is brought into contact with the user's tragus from the outside of the user's ear. In this case, since the air conduction sound emitted by the vibration unit 10 is not shielded up to the microphone unit 20, the amount of feedback returning to the microphone unit 20 is large, and howling is facilitated, and the performance of the hearing aid 1 (amplification amount). Can not raise.

  In contrast, in FIG. 9B, the vibration unit 10 is brought into contact with the user's tragus from the inside of the user's ear. In this case, the user's ears (mainly tragus and earring legs) are located between the microphone unit 20 and the vibration unit 10. Therefore, the sound emitted by the vibration unit 10 is reflected by the user's ear, and the amount of sound directly returning to the microphone unit 20 is less than in the case of FIG. Therefore, howling becomes difficult and the performance of the hearing aid 1 can be improved.

  Here, as a suitable example in which the user's ear is positioned between the microphone unit 20 and the vibration unit 10, it is only necessary that an outer peripheral portion of the ear such as an auricle, an auricular nodule, or an ear lobe exists. Alternatively, in addition to the outer peripheral portion, a lower leg of the earring, an earring, and the like may be present therebetween.

  As described above, according to the hearing aid 1 of the present invention, since the sound of the user's ear is heard by the vibration of the vibration unit 10, it is possible to secure a low sound pressure by the human body vibration sound and suppress the loss of volume feeling. In addition, since it is not necessary to provide a vent for preventing the bass from escaping, it is possible to suppress impairing comfort during wearing.

  In addition, in this Embodiment, although the sound reproduction apparatus showed the example which is the hearing aid 1, it is not restricted to this. For example, the sound reproducing device may be a headphone or an earphone. In this case, the microphone unit 20 is not provided. In this case, sound based on the music data stored in the internal memory of the sound playback device or sound based on the music data stored in the external server or the like may be played back by the sound playback device via the network. Good.

  In the present embodiment, the vibration unit 10 is brought into contact with the user's tragus from the inside of the user's ear, and the vibration is transmitted to the tragus, thereby causing the user to hear the sound. It is not limited to this. For example, the user may hear the sound by causing the vibration unit 10 to contact the user's antitragus from the inside of the user's ear to transmit the vibration to the antitragus. Moreover, you may let a user hear a sound by contact | abutting the vibration part 10 to the said user's tragus or an antitragus from the outside of a user's ear, and transmitting a vibration to an tragus or an antitragus. Note that “from the outside of the user's ear to abut against the user's tragus or anti-tragus” means that the vibration unit 10 is not embedded in the external auditory canal and is approximately parallel to the cheeks and temples. It means to contact with the tragus.

  Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, the functions included in each means, each member, etc. can be rearranged so that there is no logical contradiction, and it is possible to combine or divide a plurality of means, members, etc. into one. .

1 Sound reproduction equipment (hearing aid)
DESCRIPTION OF SYMBOLS 10 Vibration part 11 Pushing member 12 Mounting part 20 Microphone part 30 Control part 31 Analog digital conversion part 32 Signal processing part 33 Digital analog conversion part 34 Piezoelectric amplifier 40 Volume | volume / sound quality adjustment interface part 50 Storage part 60 Holding part 61 Support part 62 Ear Hanging part 63 Body part 90 Hearing aid 91 Microphone part 92 Earphone 93 Vent 101 Piezoelectric element 102 Panel 103 Mold 111 Cutting part

Claims (14)

A piezoelectric element that bends, and a vibration section that includes a panel that is bent and vibrated directly by the piezoelectric element;
A holding unit that holds the vibrating unit at a position where the vibrating unit contacts the user's ear,
A sound reproducing device for listening to sound to the user ,
An acoustic reproduction device having a predetermined weight at an end portion of the holding portion facing the vibration portion, and generating a force in a direction in which the vibration portion comes into contact with a user's ear by the weight . The sound reproducing device according to claim 1, wherein the vibration unit abuts on the user's tragus from the inside of the user's ear and transmits the vibration to the tragus, thereby allowing the user to hear sound. The sound reproduction according to claim 1, wherein the vibration unit abuts against the user's antitragus from the inside of the user's ear and transmits the vibration to the antitragus, thereby allowing the user to hear sound. machine. The sound reproduction device according to claim 1, further comprising: a pressing member that presses the vibration unit at a position where the vibration unit contacts the user's ear. The sound reproducing device according to claim 4, wherein the pressing member is detachably held with respect to the vibrating portion.   The sound reproduction device according to claim 1, wherein the user's ear canal is not sealed by the sound reproduction device. The panel vibrates with the center of the panel as an abdomen and both sides of the abdomen as nodes,
The sound reproducing device according to claim 2, wherein the center of the panel is in contact with the tragus. The panel vibrates with the center of the panel as an abdomen and both sides of the abdomen as nodes,
The sound reproducing device according to claim 3, wherein the vicinity of the center of the panel is in contact with the anti-tragus. The sound reproducing device according to claim 1, wherein the vibration unit abuts on the user's tragus from outside the user's ear and transmits the vibration to the tragus to cause the user to hear sound. The sound reproduction according to claim 1, wherein the vibration unit abuts on the user's antitragus from the outside of the user's ear and transmits the vibration to the antitragus so that the user can hear the sound. machine. In addition, with a microphone part,
Between the vibrating portion and the microphone portion, acoustic reproducing apparatus according to any one of claims 1 to 10 ears of the user is located. The sound collection type sound reproducing device according to any one of claims 1 to 11, wherein the vibration unit generates a sound emitted from an external auditory canal inside the user's ear. The vibrating portion, the ear of the user, acoustic reproduction apparatus according to any one of claims 1 to 12 is pressed with a force of 3N from 0.1 N. The piezoelectric element has a plate shape,
The panel, the area of the principal surface of the piezoelectric element, acoustic reproducing apparatus according to any one of claims 1 to 13 with a 10 times the area from 0.8 times.